Sorry but I just cannot define them as so many various types of metal - whether industrial or Alt Metal.
To me they are all Heavy Metal....as in Metallica, Black Sabbath, Nirvana and Iron Maiden et. Admittedly they are all rather 'old' bands now but they still sound like Heavy Metal to me and I still like their music.
However I have heard Cradle of Filth and Marylin Manson being referred to as Gothic Metal over here in Australia...and to be quite honest I do not like Marylin Manson.
Just my little input....